Here is the Crash report:
Minecraft has crashed!
Minecraft has stopped running because it encountered a problem; Ticking memory connection
A full error report has been saved to C:\Documents and Settings\Administrator\Application Data\.minecraft\crash-reports\crash-2013-02-25_16.17.28-server.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash :(
--- BEGIN ERROR REPORT aef8a843 --------
Full report at:
C:\Documents and Settings\Administrator\Application Data\.minecraft\crash-reports\crash-2013-02-25_16.17.28-server.txt
Please show that file to Mojang, NOT just this screen!
Generated 2/25/13 4:17 PM
-- System Details --
Minecraft Version: 1.4.7
Operating System: Windows XP (x86) version 5.1
Java Version: 1.7.0_13, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 104907448 bytes (100 MB) / 259522560 bytes (247 MB) up to 259522560 bytes (247 MB)
JVM Flags: 0 total;
AABB Pool Size: 4217 (236152 bytes; 0 MB) allocated, 3757 (210392 bytes; 0 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 71
Profiler Position: N/A (disabled)
Vec3 Pool Size: 1207 (67592 bytes; 0 MB) allocated, 1019 (57064 bytes; 0 MB) used
Player Count: 1 / 8; [iq['moeed9daska'/254, l='World of minecraft', x=152.52, y=64.00, z=160.00]]
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.
java.lang.ClassCastException: ajv cannot be cast to alr
--- END ERROR REPORT df111a33 ----------